Recording mechanism.



J. C. WARREN.

RECORDING MECHANISM.

1,300,525. APPLIATION FILED O'CT. l5, 1917. Apr. 15,

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J. C. WARREN.

RECORDING MECHANlsM.

A APPLICATION FILED OCT. I5, 1917. I 1,300,525. Patented Ap1-.15,1919.

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Inventor.

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I. C. WARREN.

RECORDING MECHANISM. APPLICATION FILED 001.151.1917.

1,300,525. Patented Apr. 15,1919.

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J. C. WARREN.

RECORDING MECHANISM.

APPLICATION FILED ocT. I5. I9I7.

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UNITED STATES PATENT oEEijcE.

JAMES C. WARREN, OF FREDERICKSBURG, 'VIRGINIA RECORDING MECHANISM.

Specification of Letters Patent. Patented Apr. 15, 1919.`

Application led October 15, 1917. Serial No. 196,738.

To all wwm t may concern Be it known that I, JAMES C. WARREN, a citizenr of the United States, and resident of Fredericksburg, Virginia, have invented certain new and useful Improvements in Recording Mechanism, of which the follow'- ing is a specification. Y

The invention relates to automatic rey corders and is designed especially for recording temperatures or pressures of steam or other fluids, and in carrying out the invention l have avoided the use of recording instruments requiring a suppl of ink and a pen, these being objectiona le, because of the attention required in refilling, also because of the liability oi' the ink to ilow too :freely or not freely enough.

ln carrying out my invention therefore l employ a perforating needle in connnection with a traveling tape which it punctures with small openings, the needle having in addition to its periorating movement a motion in a direction transversely of the tape to make it assume di'erent positions in relation to the lines of calibrations on the tape according to the variations in temperature or pressure which are to be recorded.

The invention consists in the features and combination and arrangement of arts hereinafter described and particularly pointed out in the claims.

f ln the drawings;

Figure 1 isa diagrammatic view ci the entire system.

Fig. 2 is a part view of the recording instrument with its box or container in section.

vFig. 3 is a plan view.

Fig. 4 is a plan view of a calibrated tape.

Fig. 5 is a diagram of atape and an instrument adapted to make a plurality of records from dierent sources.

Fig. 6 is a vertical sectional view taken through the perforating mechanism in a direction longitudinally of the tape.

lig. 7 is a part plan view and section of a part of the electro-magnet and showing the armature in section.

lin these drawings the tape is shown at 1 running o" from a spool through a die 2 carried by an arm 3 suitably supported,y and d indicates a punch or needle which punctures the paper of the tape at the die. The tape is calibrated preferably after the manner shown in Fig. Li having lines running lengthwise representing degrees of temperaing it its longitudinal stroke are carried byA a swlnging frame or arm 5 pivotally mounted at 6 in Xed bracket arms 7, the pivoted end of said punch carrier or frame 5 having an armature 8 mounted thereon, operating in connection with the field magnet 9 to swing the arm or frame and thus move the punch or needle in a curved path and in a direction transversely of' the tape to the proper position to correspond with the pressure or temperature, at the moment prescribed, and having arrived at this position the needle is operated vertically or longitudinally to make a puncture in the tape, ,so that at the expiration of a prescribed period the tape will have a line of ne perforations appearing as' dots on the tape.

Because the needle and its support swings in the arc of a circle from the point or center 6 the die 2 will be or" curved form. rlhe degree to which the frame or arm 5 with the needle carried thereby `is deected laterally of the tape will depend upon the current delivered to the field magnet and armature coil and this is determined by the degree of temperature or of the pressure of fluid to be recorded. For this purpose a resistance is interposed in circuit a, which includes the eld magnet 9 and the shunt winding 8 of the armature, this circuit including also the battery 10. rlhe resistance is shown at 11 and this is varied by a roller contact device 12 bearing and rolling upon the resistance bar, said roller being carried by `an arm 13, said roller being pressed into rm contact with the resistance bar by a springlli bearing on the shank of the bracket carrying the roller and carried in a recess of the arm 13. This arm is pivoted at l5 and it forms part of the electric circuit'as does also the roller,

result of variations of temperature and pressure, the effect being to shift the trolley roll on the resistance bar and thus increase or decrease the resistance and sopmodify the current to vthe field magnet and armature winding to cause a movement of the armature to accord with these changes and conse'quentlyA a swinging movement' of the arm and minor body portions 8a, 8b connected by a neck portion 8, the armature winding surrounding this neck portion and lying between the main body portion and the minor body portion 8".

The normal positionof the frame 5 with the armature 8 is such that one corner of the major body portion thereof is just within the ran e of the lines of force emanating from the eld magnet. The frame or arn 5 at this time, that is when in inactive ornormal position is lyingat an inclination to the plane of movement of the tape, it being so positionedl by the spring 8 When the e'ld magnet is energized the armature is turned and the punch carrying .arm or frame is moved in a direction transversely of the tage. i

he tape is advanced by a substantially continuous movement, by feed rolls, that marked 24 being driven through suitable means, as forv instance a clockwork-'mechanism and the one 'marked 25 being a weight roller having its axis mounted in a vertical slot 26 of a suitable frame. i

The clockwork Vmechanism alsoY controls the periods of operationtof the'punch or needle 4 for which purpose a commutator is usedas-at 27, rotating about an axis 28 and having insulating segments indicated by the black parts 29 and conducting segments at 30, the commutator segments being borneupon'by the brushes 31, so that when these are in contact with thel conducting segments the .current will be completed through the circuit. c, dfrom battery 10 and the arrangement-is ysuch that thiscircuit will be closed'v every thirty seconds andthe punch w1ll be operated and thus the tape will be punctured with. a line of fine perforations.

When the circuit is closed thecurrent will pass 'through the lower pivot bearing 6, the

arm 5, and thence to the battery. The ener` gizing of thissolenoid coil will draw up the core 38 and as this carries the punch or needle 39 at its upper end the paper tape will be punctured. Ihe upward movement of the solenoid core and needle is cushioned and arrested by a spring 40 surrounding a rod 41, depending from the arm or frame, 5, the said rod acting as a guide for an arm 42 fixed to and extending laterally from the needle rod or solenoid core 38. This.V arm slips freely on the depending rod 41 and at the upper end of its movement it strikes the spring 40 and is arrested and cushioned thereby. The arm 42 has an extension 42 at its right hand end which as the needle approaches the upper limit of its stroke. strikes against the arm 34 and lifts the same, together with the contact member 33, thus breaking the circuit vto the solenoid 37, which being denergized will allow the needle or core 38 to fall, this action being rendered certain because the core has a weight4 at 43 and also because the spring 40 tends to throw the' arm 42 with the core or needle,

downwardly. Besides breaking the circuit to the solenoid coil 37 the lifting of the arm 34 also has another function, namely, it

slightly lifts the solenoid core 44 into the field of solenoid coil 45 through which coil the current now flows through wire 46, owing tothe breaking of the circuit at 32, 33, it being understood that. the coil 45 is wound with finer wire and thus presents a higher resistance to the passage of the current than the path 'first mentioned namely bracket 5 contacts 32, 33, spring 35, post 36l and coil 37 but when this part of the circuit is broken the current takes the high resistance path 46 and coil 45 'and' this pulls up the solenoid'44 and keeps the circuit broken' at 33, 34, until the commutator 27 breaks the punch circuit, `when the core 44- together with arm 34 and contact 33 therefor will be restored ready for the next action. j

A weight 46 aids in restoring the core 44,

arm 34 and contact 33 to normal position.-

` the needlel coil 37, but being of high resistance in respect to 'the resistance of the coil 37 the latter is not energized sufficiently to give the needle an upward movement when the coil 45 is in circuit. i

The commutator is driven by thefsam'e clock mechanism as the tape feed rolls and consequently the operations of. the needles take place indefinite relation to the feed of the tape. Instead of amercury body and oat as atemperatureaflected device I may employ a thermostat. i,

In Fig. 5 I show a form of the invention adapted to make a plurality of records from different sources, such as from dilierent rooms in a building or manufacturing plant and in carrying out this part of the invention two or more independent tapes may be arranged side by side or one wide tape may be employed to receive the strokes from the needles, which with their operating means are arranged side by side. The ,Wide tape or the plurality of independent tapes, if such be used, will be fed by mechanism substantially like that described above, the feed rolls being long enough to take the wide tape or the Whole number of independent tapes. Where ya wide tape' is employed the transverse lines representing the divisions of time will be in plural series, each series corresponding in the extent of their arc shape to the lateral throw of the needle which is to puncture this portion of the tape. The wide Vtape may have its calibrations intended for one needle different from those intended for the other needle or needles according to the character of the changes t0 be recorded. The saine clockwork mechanism ma be used common to both portions of the wide tape oi' to the independent tapes and the same comniutator may Abe employed and in large part the same circuit connections from this comniutator to the battery and to the solenoids of the different units. The clockwork mechanism is of the self winding ty e.

rlhe instrument is held within a suitable covering, preferably glass inclosed and in order that it may be in atrue horizontal osition l provide adjustable feet at 50, w ich when adjusted are fixed in position by nuts 50. The ta e is directed by guides 51.

What I c aim is l. In combination a moving tape, a marku ing device, electro-magnetic means for giv'- ing said d evice its marking movement, an arm carrying said device and its electromagnetic means, said arm being pivotally mounted, an armature mounted at the pivoted end'of the said arm, a field magnet acting upon the said armature, and a controller alected by the changes in the condition to be recorded and regulating the supply of current to the field magnet, and also to the armature, substantially as described.

2. In combination a moving tape, a marking device, a carrier for said marking device, electro-magnetic means for operating the said carrier to shift it from place to place relative to the'tape, a controller in circuit With the electro-magnetic device, said controller comprising a variable resistance and means affected b the changes in the condition to be recor ed for adjusting the said resistance, substantially as described.

3. In combination a tape, feed rolls for said tape, a marking device, an electro-magnetic means for operating the marking device, a commutator for energizin the said electro-magnetic means periodical clockwork mechanism for operating said commutator, and said feed rolls, a carrier for the marking device, electro-magnetic means for shifting the carrier and a controller affected by changes in the condition to be recorded for regulating the supply of current to said electro-magnetic carrier operating means, substantially as described.

4. In combination with a moving tape, a marking device, a carrier therefor, electromagnetic means for shifting the carrier, a moving contact and a track for said moving contact in circuit with the electro-magnetic means, whereby the resistance of said circuit is changed and a controller for the movable contact affected by changes in the condition to be recorded, substantially as described.

in testimony whereof, I ax my signature.

JAMES C. WARREN. 

